混合痔宜用
A．马齿苋B．桃红四物汤C．除湿胃苓汤D．小柴胡汤E．增液汤
参考答案：D
Several swimmers have been drowned in the sea recently. So I don't ____ of your going swimming alone. [ ]
A. agree
B. support
C. admit
D. approve
在建造阶梯形沉井时，当作用在沉井侧壁上的土压力和水压力随沉井深度增加而加大，阶梯形沉井井壁平面尺寸随深度呈台阶形加大，做成( )。
A．横向面
B．纵向面
C．变截面
D．无限截面
